Star Trek has a long history of abusing evolution, and this episode continues that tradition. It is impossible to predict that one species is going to out-evolve another, as Phlox does here.

Great Moment :

Seeing a more serious side to Phlox.

Body Count :

Zero.

Factoid :

Kellie Waymire, who plays Elizabeth Cutler in this episode, also played Lanya in the Voyager episode "Muse".

Plotline

Enterprise encounters a sub-warp ship whose crew is searching for a cure to a sickness that is raveging their home world. Archer is keen to help, but on arrival they find that there are two intelligent species on the planet - and Phlox soon realises that helping one might well hold up the natural evolution of the other. But will Archer really be willing to allow a whole culture to die for his principles?